METHOD FOR PREPARATIVE IN VITRO PROTEIN BIOSYNTHESIS

The invention relates to a method for preparative in vitro protein synthesis of an expression product in a cell-free transcription/translation system, comprising the following steps: a) in a reaction vessel, a reaction solution is prepared, comprising the following synthesis substances: components of the transcription/translation apparatus for a defined expression product, amino acids, and metabolic components supplying energy and being necessary for the synthesis of the defined protein, b) the synthesis is performed in the reaction vessel in a defined period of time, without separating generated substances and without adding consumed synthesis substances within the defined period of time, c) after expiration of the defined period of time, the reaction solution is subjected to a separation step, in which generated low-molecular metabolic products and/or reaction inhibitors are separated from the solution (and extracted), d) immediately before, after or at the same time as step c) consumed synthesis substances are supplemented, e) steps b), c) and d) are repeated at least once with the reaction solution of step d), and at the last execution of step b) steps c) and d) may be left out.